Abstract
The aim of this prospective, randomized study was to evaluate the effects of telmisartan, compared with the calcium-channel blocker amlodipine, on endothelial function after coronary drug-eluting stent (DES) implantation in hypertensive patients. DES implantation impairs local endothelial function, which may be associated with future cardiovascular events. Telmisartan, which has unique peroxisome proliferator-activated-receptor-gamma-mediated effects in addition to its renin-angiotensin system-inhibition effects, has favorable effects on endothelial function. Fifty-one hypertensive patients with coronary artery stenosis but without coronary artery spasm, treated with a sirolimus-eluting stent, were randomly assigned to either the telmisartan (25 cases) or amlodipine (26 cases) treatment groups. At baseline and at 3 months after DES implantation, endothelium-dependent and -independent vasomotion were evaluated by quantitative coronary angiography under the condition of medication withdrawal. The mean luminal diameter of a 20-mm coronary segment, beginning 5 mm distal to the stent, was measured before and after infusion of intracoronary acetylcholine (10(-7), 10(-6) mol/l) and then again after infusion of nitroglycerin. Blood pre...Continue Reading
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